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Preliminary measurements on methane content in permafrost, Central Yakutia, and some experimental dataстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Brouchkov A., Fukuda M.
- Журнал: Permafrost and Periglacial Processes
- Том: 13
- Номер: 3
- Год издания: 2002
- Издательство: John Wiley & Sons Inc.
- Местоположение издательства: United States
- Первая страница: 187
- Последняя страница: 197
- DOI: 10.1002/ppp.422
- Аннотация: The concentration of methane in air bubbles within permafrost was sampled from both alluvial deposits and ice wedges in Eastern Siberia. The values of methane concentration were as high as 6000 ppmv in both frozen soil and ice wedges. The anti-proportional relationship between methane and carbon dioxide concentration values in permafrost was examined. Values of methane concentration in ice wedges are smaller than those in frozen soils. Values of total volumetric air content, water content and density were obtained by on-the-spot investigation. Increases of methane and carbon dioxide concentrations were detected in accordance with increases of water content of frozen soil. Geologically older permafrost contained higher values of methane concentration than younger permafrost. Samples of frozen soils were incubated at temperature 5 °C in order to study possible methane production. A slow production in different soils was observed, although the experiments took a long time before measurable changes of methane content could be found. The rate of methane production decreases in time; therefore, long-term forecasts of methane content in frozen soils are still problematical.
- Добавил в систему: Брушков Анатолий Викторович